moore



H. N. MOORE.

TRANSMISSION MECHANISM. APPLICATION FILED APR. I0, 1920.

Reissued Sept. 28,1920. a, 1 14,952.

2 SHEETS-SHEET I.

IN V EN TOR.

24 mwaa ATTbR EY H. N. MOORE.

TRANSMISSION MECHANISM.

APPLICATION FILED APR-10, 1920.

14,952. 2 SHEETS-SHEET 2.

Beissued' Sept. 28, 1920-.

INVENTOR.

ATTORN Y v UNITED I PATENT OFFICE.-

HENRY n. moons, or nos'ANenLns, camromrm, nssreivon T0 crimcronr'rmm comraiw, A COPARTNERSI-IIP corrsrsrmo oFnIMsELr, THA'N 0. LE MU-HYO-N, AND FRANK E. ECKHABT, ALL or me ANGELES, CALIFORNIA,

TRANSMISSION MECHANISM.

To all whom itmay concern:

Be it known that I, HENRY N. MooRE, av citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Transmission Mechanism, of which the following is a specification.

This invention relates to improvements in automobiles and more particularly to a gransmission mechanism attachment there-' as an attachment for a well-known type of automobile having only two speeds for-" ward, auxiliary transmission mechanism which will permit severalspeeds forward in addition to the forward speeds provided by the transmission proper and therefore.

increase the efliciency of the automobile.

Another object is to. provide transmissionof the automobile-to which it is attached will be materially strengthened and improved.

Other objects and advantages will appear in the course of the following description.

The accompanying drawings illustratethe invention.

Figure l is atop plan view showing an automobile with my transmission attach-- ment mounted thereon. i

Fig. 2 is a side elevation of the complete attachment.

Fig. 3 is adongitudinal. vertical. section taken through the mechanism.

Fig. 4 is 'a sectional view taken on line 4-4 of Fig. 3.

Fig. 5 is a sectional view taken on line 5--5 of Fig. 3.

Fig.6 is a sectional viewtaken on'line 66ofFig.2. a

Fig. 7 is a .front elevation of the plate for attaching the mechanism to the diflejrential housing; and

An object of the invention'is to provide Specification of Reissued Letters Patent. Reissued Sig- 1328, 1920,

Original No. 1,820,635, dated November 4, 1919, Serial'li'o. 184,873, filed August 7, 1917. for reissue filed April 10, 1920. Serial No. 372,982.

A designates an automobile including transmission mechanism B controlled by a pedal- C'. This transmission provides two speedsfforward and one speed in reverse. Another essential element of the automobile with .which my attachment coiiperates is the differential D, to the housing of which is secured the gear casing of my transmission mechanism. E designates my transmission mechanism as an entirety, saidmechanism including the automobile drive shaft F. Thisdrive shaft F and its housing G are not parts of my attachment, however, and constitute elements of the auto- Application mobile proper, it only being necessary to shorten these elements F and G in order to provide for the attachment of my mechanism to the automobile.

1 designates a gear casing which is open at both ends and houses the transmission gears. A plate 2 closes the rear end of the casing 1 and is secured thereto by bolts Open ngs 4' are formed through the plate 2 and receive bolts 5 carried by the differential housing section 6. There is provided a roller bearing housing section 7 forming a part of the automobile and which is secured to the housing section 6' by the bolts 5. The

' bolts 5 extend through beyond the housing section 7 and through the openings 4, Nuts 8 are turned on the bolts 5- and upon the ,inner side of the plate 2 and hold the casing secured to. the housing section 6. -The outer endof the housing section '(engages the outer fac'e of plate 2 within a depression 9 formed therein. The inner side of the plate 2 is provided with an annularly offset portion 10 which defines. a shoulder 11 adapted to engage u on theflinner side of the casing 1. This s oulder l1 acts as a centering means in positiomng the parts,

' causing the plate 2 to properly aline when inserted in position.

Before attaching thev cas1ng,r ;as described,

to the differential housing section 6 of the automobile, the drive shaft F and housing G therefor are shortened in any suitable manner so as to provide for: their connection with the transmission mechanism E.

There is provideda' clamping means tothis member 12 is provided with flanges 13 secured by the bolts 14 to the other open end of the casing 1. The flanges 13 are located in spaced relation to the inner end of the member 12 and said innerend projects slightly into the casing. The shaft housing G is mounted within the member 12. Bolts 15 are inserted through alined opposed ears 16 formed on the split end of the member 12 and have nuts '17 turned on. their screwthreaded ends. By tightening these. nuts 17 the split end of the member 12 will tightly clamp the housing G. Roller bearings 18 are mounted within the member 12 adjacent to the inner end thereof, said shaft F exface with jawvv clutch-members 20.

tending through said bearings and into the casing The member 12 thus forms a bearin shaft is a drive gear 19 formed u on one he gear 19 meshes with a gear 21 which is keyed to one end of a tubular shaft 22. The tubular shaft is supported upon a bolt 23 whichis inserted through the casing and held in position .by a nut 24. A gear 25 is mounted upon the other end of the tubular'shaft 22 and meshes with a gear 26 which is loosely mounted upon a shaft 27. The shaft 27 cor-. responds to the drive shaft F and is concentric therewith. U on the rear end of the shaft 27 a differentia pinion 28 is mounted, said pinion being a part of the differential gzarin The shaft 27 extends inwardly yon the center of the basin land at said extended end is enlarged an squared as at 29. At its end face the shaft 27 is provided with an opening 30 which receives the reduced end 31 of the shaft F, said reduced end 31 rotating freely within said openving30.'

As a means for connecting the shaft 27- for rotation with the shaft F there is provided a sliding clutch member 32 having aw'clutch faces 33 and 34 at its ends. The clutch face 33 is adapted for 'coiiperation with the clutch members 20-on the gear 19 so as to lock the shafts F and 27 together for rotation. The clutch face 34'is adapted for cooperation with the clutch member 35 formed on the 0p sed face of the gear 26.

here is provided a means for shifting the clutch member 32 which comprises a slide bar 36 slidably extended through an support. Keyed to the end of the offset 37 formed upon one side of the casing 1. A yoke 38 is fixed to the shaft 26 and is mounted within an annular groove 39 formed in the clutch member 32. The forward end'of the bar 36 is pivoted as at 40 to an operating-rod 41. The rod 41 extends along .oneside of'the'shaft F to a point adconnected'with'the stud 45, there being pro- .vided a slot 47 in said operating lever at a point adjacent to its lower end'for the reception of the stud 45. A pivot pin 48 is inserted through the lever 46 and stud to ivotally connect the lever with the stud.

- t will 'be seen that'the lever is universally connected with the bracket 44, it being possible to. move the lever back and forth and also in a plane at right angles to the back and forth movement. There is provided a detent 49 on the lower end of the lever 46 which is adapted to extend into any one of three openings 50 formed in the arm 44. A

spring means 51 is connected with the outer end of the stud 45 and engages" the adjacent face of the lever 46 below said stud so as to hold the detent 49 within certain of the openings 50. The lever- 46 is preferably formed in two parts, joined by a coupling member 52. The lower part of the lever may be formed of a solid metal, and to reduce weight and subsequent vibration the .upper section of-the lever is formed hollow.

A suitable. ball orgripping member 53 is fixed to the upper end of the lever.

1n starting an automobile equipped with my transmission mechanism, the lever 46 is in neutral position, as shown in Fig. 2 of -jac ent to the forward'end of the shaft and I The bracket 7 the drawings, causing the shaft F to be disconnected from the shaft 27. This condition is desired in starting or cranking an automobile of the type shown and described,

inasmuch as in many instances with these types of automobiles the clutchplates stick to one another and cause the automobile to move forwardly and sometimes injure the operator when first being started. With my transmission mechanism since the drive shaft is not connected with the rear wheels, the above noted disadvantages are elimi nated.

The next step is to move the lever 46 rearward] and this may be done by gripping it in suc manner that the pin 41 is moved out of one of the openings 50 and the lever is then free to be moved backward or forward as desired, however, it is now moved backward into first position so that the clutch member and the shafts F andm27 are connected. The automobile maybe operated in the ordinary manner when these shafts are connected.

When it is desired to obtain the gear ratio or speed between the high and lowspeed provided in the type of automobile illus-. trated and described, the transmission B first being throwninto high speed, the lever may be grasped and pushed forwardly causing the rod 41 and bar 36 to be pushed rearwardly and the clutch member 32 to -co; operate withthe clutch member 35. This .action locks the gear 26 with the 'shaft 27.

Power is then transmitted from the gear 19 through gear 21, tubular shaft 22 and gear 25 to gear 26 and shaft 27, the latter being connected with the differential as described.

l/Vhen the mechanism is in thisposition by pushing the pedal 0 of the automobile forward, the low speed of the transmission 13 is provided as a gear reduction in combina tion with the reduction provided by my transmissionmechanism, and it will be seen that with these combined reductions a maximum pulling power is obtained.

When a steep hill is approached while running on high gear the driver will shift the lever? and pedal C in low speed position so that the climbing and pulling power of the automobile will be materially increased. After theneed for the maximum power has passed the pedal C may be allowed to return to high speed position.

I claim:

1. In combination, a drive shaft, a housing for the drive shaft, a differential housing, change speed mechanism including a casing rigidly secured to the housing of the differentlal, and a tubular clamping member carried by the casing and receiving and clamping the housing of the. drive shaft, there being a bearing in. the elampingmember for the shaft and said drive shaft being operatively connected with the change speed mechanism,

2. In combination, a drive shaft, a housing for the drive shaft, a differential housing, change speed mechanism including a casing rigidly secured to the housing of the differential, a clamping member carried by the casing and receiving and clamping the housing of the drive shaft, said drive change speed mechanism, a bracket secured to the drive shaft housing, a lever pivotally mounted on said bracket, means to hold the lever in different positions, and a connection between the lever and. change speed mechanism to operate said mechanism.

3. In transmission mechanismthe combination with an automobile'having differtial gearing, a housing therefor, a drive shaft and a housing for the drive shaft, of an auxiliary transmission casing rigidly secured to the differential housing, a clamping member carried b said casing and receiving the drive sha t housing, said drive shaft extending into the casing, a plurality of gears operatively connected with one another and the drive shaft and differential gearing, mounted within the casing, a clutch member for operating the auxiliary transmission, a rod connected with the clutch member, a bracket fixed to the drive shaft housing, a lever pivoted intermediate .its ends upon said bracket and being pivotally connected at its lower end to said rod, and detent meansfor holding the lever in different positions whereby the transmission mechanism is held in different positions.

4. 'In transmission mechanism, a casing, change speed gears mounted in the casing, means for connecting one end of the casing with the housing for the differential gearing of an automobile and means for connecting the other end of the'casing with the housing for the drive-shaft of an automobile comprising atubular member provided on opposite sides with longitudinal slits, and means fortightening and clamping said member to effect the holding of a drive shaft housing. I

-----5. In combination, a change speed mechanism casing having a plate closing its rear end and bolted to the casing, a differential housing comprising sections, onehousing section having a bearing, bolts passing through the plate and through the last named housing section and into another of the housing sections, a shaft journaled in said .bearing, a bearing supporting member bolted to the front end of the casing, a bearing in the supporting member, a drive shaft journaled in the second bearing, a. housing for the drive shaft connected to the bearing supporting member, and change speed mechanism to operatively connect the shafts to one another.

Signed at 'Los Angeles, California, this 

